C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 5/22 (2006.01) B01D 71/52 (2006.01) C08G 65/00 (2006.01) C08G 65/48 (2006.01) C08L 71/00 (2006.01) H01M 8/10 (2006.01)
Patent
CA 2098238
"Polymer electrolyte membrane, and process for the production thereof" In order to produce a polymer electrolyte membrane from sulfonated, aromatic polyether ketone, an aromatic polyether ketone of the formula (I) Image in which Ar is a phenylene ring having p- and/or m-bonds, Ar' is a phenylene, naphthylene, biphenylene, anthrylene or another divalent aromatic unit, X, N and M, independently of one another are 0 or 1, Y is 0, 1, 2 or 3, P is 1, 2, 3 or 4, is sulfonated and the sulfonic acid is isolated. At least % of the sulfonic groups in the sulfonic acid are converted into sulfonyl chloride groups, and these are reacted with an amine containing at least one crosslinkable substituent or a further functional group, and unreacted sulfonyl chloride groups are subsequently hydrolyzed. The resultant aromatic sulfonamide is isolated and dissolved in an organic solvent, the solution is converted into a film, and the crosslinkable substituents in the film are then crosslinked. In specific cases, the crosslinkable substituents can be omitted. In this case, sulfonated polyether ketone is converted into a film from solution.
Helmer-Metzmann Freddy
Ledjeff Konstantin
Nolte Roland
Osan Frank
Ritter Helmut
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
Pemeas Gmbh
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